Use bom to manage versions of samples' Spring Data dependencies

See gh-777

samples/rest-notes-slate/build.gradle

@@ -23,13 +23,14 @@ ext['spring-restdocs.version'] = '3.0.0-SNAPSHOT'
 
 dependencies {
 	implementation platform("org.springframework:spring-framework-bom:6.0.0-M2")
+	implementation platform("org.springframework.data:spring-data-bom:2022.0.0-SNAPSHOT")
 	implementation "com.fasterxml.jackson.core:jackson-databind:2.13.1"
 	implementation "jakarta.servlet:jakarta.servlet-api:5.0.0"
 	implementation "org.hibernate.validator:hibernate-validator:7.0.0.Final"
 	implementation "org.hibernate:hibernate-core-jakarta:5.5.7.Final"
 	implementation "org.springframework:spring-webmvc"
-	implementation "org.springframework.data:spring-data-jpa:3.0.0-SNAPSHOT"
-	implementation "org.springframework.data:spring-data-rest-webmvc:4.0.0-SNAPSHOT"
+	implementation "org.springframework.data:spring-data-jpa"
+	implementation "org.springframework.data:spring-data-rest-webmvc"
 
 	runtimeOnly 'com.h2database:h2:2.0.206'
 	runtimeOnly 'org.atteo:evo-inflector:1.2.1'

samples/rest-notes-spring-data-rest/pom.xml

@@ -24,6 +24,13 @@
 				<scope>import</scope>
 				<type>pom</type>
 			</dependency>
+			<dependency>
+				<groupId>org.springframework.data</groupId>
+				<artifactId>spring-data-bom</artifactId>
+				<version>2022.0.0-SNAPSHOT</version>
+				<scope>import</scope>
+				<type>pom</type>
+			</dependency>
 		</dependencies>
 	</dependencyManagement>
 
@@ -55,12 +62,10 @@
 		<dependency>
 			<groupId>org.springframework.data</groupId>
 			<artifactId>spring-data-jpa</artifactId>
-			<version>3.0.0-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.data</groupId>
 			<artifactId>spring-data-rest-webmvc</artifactId>
-			<version>4.0.0-SNAPSHOT</version>
 		</dependency>
 
 		<dependency>